Unit rate of 357 miles in 6.3 hours

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4